From 92d617abc53180cbfa88482382e8f0c13853cc1d Mon Sep 17 00:00:00 2001 From: John Snow Date: Mon, 14 Dec 2015 14:55:15 -0500 Subject: [PATCH] qemu-img: abort when full_backing_filename not present ...But only if we have the backing_filename. It means something Scary happened and we can't really be quite exactly sure if we can trust the backing_filename. Signed-off-by: John Snow Reviewed-by: Max Reitz Message-id: 1450122916-4706-5-git-send-email-jsnow@redhat.com Signed-off-by: Max Reitz --- qemu-img.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/qemu-img.c b/qemu-img.c index b6b4c9e304..3d48b4f00e 100644 --- a/qemu-img.c +++ b/qemu-img.c @@ -2040,7 +2040,10 @@ static ImageInfoList *collect_image_info_list(const char *filename, if (info->has_full_backing_filename) { filename = info->full_backing_filename; } else if (info->has_backing_filename) { - filename = info->backing_filename; + error_report("Could not determine absolute backing filename," + " but backing filename '%s' present", + info->backing_filename); + goto err; } if (info->has_backing_filename_format) { fmt = info->backing_filename_format;